The Walker School, formerly known as the Joseph T. Walker School, is a private school in Marietta, Georgia, United States, on Cobb Parkway in what was originally Sprayberry High School. It was founded in 1957 as the St. James Day School at St. James Episcopal Church near the Marietta square. In 1972 the school became an independent body as the Joseph T. Walker School. The school teaches students in pre-kindergarten through 12th grade at the same location.

Marietta is a city in and the county seat of Cobb County, Georgia, United States. At the 2020 census, the city had a population of 60,972. The 2019 estimate was 60,867, making it one of Atlanta's largest suburbs. Marietta is the fourth largest of the principal cities by population of the Atlanta metropolitan area.